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batman-adv: Act on NETDEV_*_TYPE_CHANGE events

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A network interface can change type. It may change from a type which
batman does not support, e.g. hdlc, to one it does, e.g. hdlc-eth.
When an interface changes type, it sends two notifications. Handle
these notifications.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2015-12-03 21:12:33 +01:00 committed by David S. Miller
parent 3ef0952ca8
commit a1a66b1100
1 changed files with 3 additions and 1 deletions
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4
net/batman-adv/hard-interface.c
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@ -709,7 +709,8 @@ static int batadv_hard_if_event(struct notifier_block *this,
}
hard_iface = batadv_hardif_get_by_netdev(net_dev);
if (!hard_iface && event == NETDEV_REGISTER)
if (!hard_iface && (event == NETDEV_REGISTER ||
event == NETDEV_POST_TYPE_CHANGE))
hard_iface = batadv_hardif_add_interface(net_dev);
if (!hard_iface)
@ -724,6 +725,7 @@ static int batadv_hard_if_event(struct notifier_block *this,
batadv_hardif_deactivate_interface(hard_iface);
break;
case NETDEV_UNREGISTER:
case NETDEV_PRE_TYPE_CHANGE:
list_del_rcu(&hard_iface->list);
batadv_hardif_remove_interface(hard_iface);